3. Hershey-Chase (1952) The Definitive Proof Hershey and Chase utilized phages in their research. A bacteriophage is a virus that infects a bacterium, it consists of a protein coat and DNA, it also reproduces quickly and can easily be harvested. Hershey and Chase used radioactive P and S to track the differences in the protein and DNA, since only DNA contains P and only proteins contain S. They infected bacteria with the phage that had the radioactive S, and they infected another group of bacteria with a radioactive P. The results showed that the bacteria contained radioactive P entered the bacterium. Watch this to help you understand: https://www.youtube.com/watch?v=hubXqPrsIR4 EXPERIMENT Radioscthe Kaioactivity Page

Q: Often relinquishing the young ones going to food shortage is one of the common behaviour as exhibit ...

A: Introduction: The tissues and organs of mice are very similar to the human beings and also they have...

Q: FtsZ and MreB in

A: FtsZ is found in almost all bacteria and so many archaea. the chloroplasts and some mitochondria, wh...

Q: Draw a typical climate diagram for a tropical rainforest. Label all parts of the diagram and describ...

A: The tropical rainforest climatograph includes average rainfall and temperature information, whereas ...

Q: A) What type of inheritance pattern does radish colour represent B) List the genotypes for the three...

A: Inheritance pattern: Mendelian inheritance is an inheritance pattern based on the rules of segregati...

Q: What is denaturation and renaturation of DNA?

A: In the nucleus of eukaryotes, DNA is divided into chromosomes. The human genome, for example, is com...

Q: Do you think the human species can continue raising its global carrying capacity? How so, or why not...

A: Carrying capacity represents the population size that the environment can maintain for an indefinite...

Q: Describe environmental systems

A: The earth houses the biotic and abiotic factors of ecosystems.

Q: Are protozoans presenting contractile, or pulsatile, vacuoles easily found in fresh or in salt water...

A:   We have to explain Are protozoans presenting contractile, or pulsatile, vacuoles easily found in f...

Q: At the end of mitosis, the daughter cells possess: A. half the number of chromosomes as the parent c...

A: Mitosis  It is the process of cell division where one cell divided into two daughter cells.

Q: Jsing the Table Below. Differentiate how human and plants will respond to the given stimuli. Provide...

A: Receptors are proteins molecules found on the surface of the cell that responds to stimuli by bindin...

Q: Hemophilia results from a sex-linked gene. The disease is most common in males, but the hemophilia a...

A: We have to explain the  apparent anomaly. When Hemophilia results from a sex-linked gene. The diseas...

Q: scribe the differences in the anatomy and physiology of the male reproductive system in the ving spe...

A: The male reproductive system is the system in the male body that produces fertile male gametes, sper...

Q: Growth in Oxygen Classifications (1 Point each) Only grows in the absence of oxygen v Grow solely by...

A: Anaerobes, are the organism that can survive in the absence of free oxygen, and  that anaerobes that...

Q: What are two obvious features of interphase in plant or animal cells?

A: The interphase represents the duration between two succesive mitotic divisions. It is the period in ...

Q: hragm suddenly (briefly, but forcefully) contracts during a hiccup. what happens to each of the foll...

A: BASICS: - Diaphragm in a state of relaxation exhibits a dome shaped structure. When diaphragm contra...

Q: Subspecies

A:   taxon is the one or many more of a group of population of an organism seen by taxonomist to form a...

Q: What is DNA methylation? When we say that DNA methylation is heritable, what do we mean? How is it p...

A: Genetics is a branch of science that studies an organism's genes, heredity, and genetic variation. G...

Q: What do you think is/are the most reliable criteria for determining muscle homologies? Are muscle na...

A: Homology is similarity in structure, it's physiology, which are been gained from the evolutionary an...

Q: Do you think humans can control the effect of genetic drift? Why or why not?

A: Ans- Yes, humans can affect genetic drift. Genetic drift is defined as a change in allele frequencie...

Q: 3. 2. 4. 5.

A: Leaf is a photosynthetic organ. It is usually green in colour as it contains a green coloured pigmen...

Q: Difference of metaphase from metaphase I

A: Introduction:- Metaphase is a stage in the cell cycle where all the genetic material is condensing ...

Q: Which of the following is most likely to be used for sewage treatment? View Available Hint(s) for Pa...

A: Microbes are the organisms that can't be seen by naked eyes. The microscope is used to see small org...

Q: In the diagram, base 5 (and only the base) is covalent bound to

A: Ans C.  Thymine    

Q: distinguish between hypo-osmotic overhydration and hyper-osmotic dehydration.

A: It happens when there exists an problem in homeostasis mechanism. Homeostasis basically functions he...

Q: Pros and Cons of CRISPR-CAS9  please explain it in a simple language

A: Answer 

Q: What feature of mycobacteria is responsible for the unusually slow growth of these bacteria?   They ...

A: INTRODUCTION Mycobacterium They are generally non motile acid fast bacteria causes tuberculosis and ...

Q: Make a spider key please on the ff organisms asap

A: Spider key is like a dichotomous key.  A dichotomous key is an important scientific tool, used to id...

Q: ....Has no tall, aggressive ****...................... Kajus

A: Dichotomous key: The word "Dichotomous" means divide in two. A dichotomous key includes organisms th...

Q: What is the order of tissues in a cross-section of the stem in a woody eudicot (from the inside to t...

A: Cork cambium:-                                      Dicots plants undergo primary as well secondary...

Q: Why do lipids contain more energy than carbohydrates?

A: Biological macromolecules are classified into three types: Carbohydrates The nucleic acids Proteins...

Q: What are some industrial processes that use bacteria What are examples of human diseases caused by b...

A: Tuberculosis, pertussis, diphtheria, bacterial meningitis, gonorrhoea, syphilis, bubonic plague, lep...

Q: rly childhood education( infant, toddler and caregiver).

A: Roles of an adult in a infant-toddler education:- Making children explore common objects and train ...

Q: In the laboratory you observe that IL-4 stimulates the proliferation of B cells, cytotoxic T cells a...

A: Introduction: Cytokines are a group of proteins that serve as chemical messengers and are secreted b...

Q: What is responsible for sharp differences in species diversity between places such as India vs South...

A: The number of different species found in an environment, as well as the relative abundance of each o...

Q: Suppose that a particular species of vertebrate animal has immunoglobulin heavy-chain genes that inc...

A: ANSWER;-

Q: DISCUSS THE IMPORTANCE OF THE FIBERS  IN PREPARATION OF CULINARY CUISINE

A: Dietary fibres play an important role in cuisines because of the following properties exhibited by t...

Q: Your patient is HIV+ and is having trouble sticking to their treatment plan. Help them understand wh...

A: HIV drug resistance - when virus replicating continuously even in the presence  of that particular i...

Q: What are d ester linkages of fatty acids?

A: As it is an essential component of lipids found in many living organisms, fatty acids are composed o...

Q: DISCUSS THE IMPORTANCE OF THE VITAMINS AND MINERALS  IN PREPARATION OF CULINARY CUISINE

A: Vitamins are organic substances, which means they're made by plants or animals. Minerals are inorgan...

Q: Your mother bought some meat from the market one day. She placed the meat in a pan but forgot to pla...

A: The reason for these consequences could be the rotting of meat. Maggots and flies are attracted to r...

Q: Compare and contrast the following processes in plants and animals in terms of their reproduction, d...

A: * plants and animals reproduce sexually, which produces a male and female gametes to form a zygote. ...

Q: How is the plasma membrane best described? O a phospholipid monolayer with embedded proteins surroun...

A:

Q: Factors Affecting Climate 5. The six factors that affect climate are: a. Latitude b. Ocean Currents ...

A:

Q: Select the correct pathway in the angiosperm lifecycle. Sporophyte - mitosis - spores - gametophyte ...

A: Angiosperm, also known as flowering plants, is the largest and most diverse group of flowering plant...

Q: Some members of the spirochetes move by means of   gliding. peritrichous flagella. axial filaments. ...

A: Spirochetes are a group of six genera of spiral-shaped, long-slender bacteria. They could be self-co...

Q: e protozoans presenting contractile, pulsatile, vacuoles easily found in esh or in salt water? pe in...

A: Protozoans are single celled microrganisms usually living underwater. These are eukayrotic cells tha...

Q: The diagram shows the levels of organization for an organism. organism 3 1 cells What levels are rep...

A: Humans, like other multicellular organisms, possess organ systems which work together to perform out...

Q: Which of these would be evidence against endosymbiosis? a) chloroplast have their own DNA O b) their...

A: Endosymbiosis: It can be defined as a relationship between two organisms where one organism lives in...

Q: Thoko’s father suffered a heart attack recently.  He is 48 years old, does not exercise, is overweig...

A: ANSWER:  Tholo's father suffered a heart attack, he does not exercise, is overweight, and Smokes hea...

Q: 5. A horse breeder finds that one of the stallions has a genetic defect that affects the motility of...

A: Probability means the chance of occurrence of a certain event when expressed quantitatively. It is a...

Genetic Recombination

Recombination is crucial to this process because it allows genes to be reassorted into diverse combinations. Genetic recombination is the process of combining genetic components from two different origins into a single unit. In prokaryotes, genetic recombination takes place by the unilateral transfer of deoxyribonucleic acid. It includes transduction, transformation, and conjugation. The genetic exchange occurring between homologous deoxyribonucleic acid sequences (DNA) from two different sources is termed general recombination. For this to happen, an identical sequence of the two recombining molecules is required. The process of genetic exchange which occurs in eukaryotes during sexual reproduction such as meiosis is an example of this type of genetic recombination.

Microbial Genetics

Genes are the functional units of heredity. They transfer characteristic information from parents to the offspring.